Key information relevant to the recruitment process for the
overall study, such as dates of the recruitment period and locations

No text entered.

Pre-Assignment Details

Significant events and approaches for the overall study
following participant enrollment, but prior to group assignment

At the time of disease progression, participants had the option to be unblinded. Participants (pts) who were on placebo+paclitaxel could continue in an open-label lapatinib monotherapy extension phase until further progression or an unacceptable toxicity. All participants were followed for survival. The unblinding was performed by a third party.

Explanation of how the number of participants for analysis was determined.
Includes whether analysis was per protocol, intention to treat, or another method.
Also provides relevant details such as imputation technique, as appropriate.

Metastasis is defined as the spread of a tumor or cancerous cells from the primary site to one or more sites elsewhere in the body. Visceral metastasis is defined as the spread of cancer to viscera, the internal organs of the body, specifically those within the chest (as the heart or lungs) or abdomen (as the liver, pancreas, or intestines). Non-visceral organs are defined as any organ not considered visceral.

The stage of cancer is a description of the extent to which the cancer has spread. Stage I cancer is localized; Stage II cancer has not started to spread into the surrounding tissue, but the tumor is larger than in Stage I; Stage III cancer is locally advanced and/or involves local lymph nodes; Stage IV cancer has spread to other organs.

Duration of response is defined for the subset of participants with a confirmed CR or PR as the time from first documented evidence of CR or PR until the first documented sign of disease progression (radiological or clinical assessment of symptomatic progression) or death due to any cause during the randomized phase. Only participants with a confirmed CR or PR were included in this analysis. Disease progression is based on the assessments by the investigator.

Time Frame

Randomization to disease progression or death (up to a maximum of Month 53)

Safety Issue

No

Population Description

Explanation of how the number of participants for analysis was determined.
Includes whether analysis was per protocol, intention to treat, or another method.
Also provides relevant details such as imputation technique, as appropriate.

Limitations of the study, such as early termination leading to small numbers of participants
analyzed and technical problems with measurement leading to unreliable or uninterpretable data

Some participants (PAR) are captured as withdrawing from the study due to death. Per protocol, PAR who died were considered to be study completers and did not withdraw from the study; for the purposes of this report, they are classified as withdrawn.